package main

import (
    "encoding/json"
    "fmt"
    "testing"
)

type I struct {
    A string
    B int
    M map[string]string
}

type T struct {
    A string
    B int
    M map[string]string
    I interface{}
}

var d = createT()

func BenchmarkJsonMarshal(b *testing.B) {

    for n := 0; n < b.N; n++ {
        b, _ := json.Marshal(d)
        b = b
    }

}

func BenchmarkStreamPrintPlusV(b *testing.B) {

    for n := 0; n < b.N; n++ {
        b := fmt.Sprintf("%+v", d)
        b = b
    }
}
func BenchmarkStreamPrintHashV(b *testing.B) {

    for n := 0; n < b.N; n++ {
        b := fmt.Sprintf("%#v", d)
        b = b
    }
}
func BenchmarkStreamPrintPureV(b *testing.B) {

    for n := 0; n < b.N; n++ {
        b := fmt.Sprintf("%v", d)
        b = b
    }
}

func createT() T {

    s := I{
        A: "string",
        B: 42,
        M: map[string]string{
            "Key1": "Value1",
            "Key2": "Value2",
        },
    }

    return T{
        A: "string",
        B: 42,
        M: map[string]string{
            "Key1": "Value1",
            "Key2": "Value2",
        },
        I: s,
    }
}

/*

 go test -benchmem -bench=.
BenchmarkJsonMarshal-4            500000          3095 ns/op        1216 B/op         25 allocs/op
BenchmarkStreamPrintPlusV-4       500000          2677 ns/op         616 B/op         21 allocs/op
BenchmarkStreamPrintHashV-4       500000          3546 ns/op         696 B/op         21 allocs/op
BenchmarkStreamPrintPureV-4      1000000          2223 ns/op         560 B/op         14 allocs/op
PASS
ok      _/home/adam/Go/src  7.009s

*/